Coil for dynamo-electric machines.



G. GHOVAN-L' g V c0IL FOR'DYNAMO ELECTRIC MACHINES.

APiLIGATION FILED MAR. 3, 1906. .I

957,866. Patented May-17, 1910. 1

' Fig. 5

Fig.2 4 2' INVENTOR ATTONEY UNITED s'rAtrEs PATENT OFFICE.

GUSTAVE CHOVAN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

. GOIL FOR DYNAMO-ELECTRIC. MACHINES.

Specification of Letters Patent.

PatentedMay 13,1910.

Application filed March 3, 1906. Serial No. 304,062.

To all whom it may concern:

Be. it known that I, GUsrAvE CHovAN, a citizen of the United States, and a resident of Pittsbur ,in the county of Allegheny and State 0 'Pennsylvania, have invented a new and useful Im rovement in Coils for Dynamo-Electric l\ achines, of which the following is a specification.

My invention relates to coils for dynamoelectric machines and "it has for its object to providea coil of this class which shall be simple, durable and easily formed, in ac ture slots. which are separated by a considerable are dependent upon the number of poles, parts of two coils being located in each slot. \Vith this arrangement, it has been found that the end connections for the coils which are outside the armature slots may advantageously assume a V-shape with a loopin the angle of the V which changes the plane of the conductors from that in which they leave one armature slot to the plane inwhich they enter asecond slot and the clips-which received the cross-connections have been attached to the aforesaid bent portion of the coil.-

-Accordin to my present invention, I-prolongone o the strap conductors, of whichthe coil is'comprised, at itslooped portion and twist the side portions of the loop tofgether so that the cross-connections themselvesrnay readil be attached, in any suitable manner, to t eelonga'tion.

In the accompanying drawings, Figure 1 is an elevation and Fig. 2 a plan view, of a coil formed in accordance with my invention. Fig. 3 is an end elevation, Fig. 4 a plan view and Fig. 5 a side elevation of a coil embodying a form slightly modified from that shown in Figs. 1 and 2.

Referring to Figs. 1 and 2, the coil illusnects the conductors of the upper and lower planes. The loop 10 formed by three of the conductors 1, 2, 3 and at is made as short as the dimensions of the strap of which they are constructed will allow, but the loop 11 of the fourth conductor is elongated to extend below the other conductors of the coil in order that suitable cross-connections may be attached thereto.

' Referring to Figs. 3, 4 and 5, the coils illustrated therein have the same general form as the coil illustrated in Figs. 1 and 2, except that instead of the loops 10 and 11,

which are located substantially in radial planes relative to the core with which the coil is adapted for use, a'loop 12 is provided between the end portions 8 and 9 which is located in a diagonal plane and the elongated conductor is twisted through substantially a half turn and projects a material distance below the 1oop,as indicated at 13. It may be advisable, in some cases, to fasten the two portions of the conductor together just before the twist occurs which may be accomplished by a rivet 1 1. The projection formed in this way corresponds to the projection 11 and suitable cross-connections may readily be attached thereto.

Theelongations or projections which are hereinbefore described may be of any suitable form or length and their use is not restricted to any specific form of coil.

having a projection for attachment to cross-- connectors which is in the form of an elongated and twisted looped portion and is located between the portions of the coil to be included inihe core slots,

3. In a dynamo-olefin? machine, a coil comprising a plurality of turns oi strap conductor one of which projects beyond; the others at one end to sloop the sides of which are twisted 2111C: riveted togetheu L s. dynamo-electric machine, a coil eomprlsmg a plumhizy turns oi strap senses 

